A secondary pouring construction device for small structural openings

Abstract

The invention discloses a secondary pouring construction device for a small structure hole. The secondary pouring construction device comprises a wood plastic board, a foam double-side glue layer, a plastic formwork working face layer, two batten keels, two upper ejecting trays and two supporting steel pipes. The foam double-side glue layer is laid on the upper board face of the wood plastic board, and the area of the foam double-side glue layer is equal to that of the upper board face of the wood plastic board. The plastic formwork working face layer is laid on the foam double-side glue layer, and the area of the plastic formwork working face layer is smaller than that of the foam double-side glue layer. The two batten keels are installed below the wood plastic board in parallel. Tray bodies at the upper ends of the two upper ejecting trays support the two batten keels, and the lower ends of the two upper ejecting trays are inserted in the top ends of the two supporting steel pipes for vertical supporting respectively. The secondary pouring construction device for the small structure hole solves the problem of grout leakage in the pouring process, the surface obtained after pouring does not need to be handled again, and good application prospects are achieved.

Description

technical field [0001] The invention relates to a construction device, in particular to a construction device for secondary pouring of small structural openings. Background technique [0002] At present, it is known in the construction industry that due to various objective reasons, a small structural opening with an area of ​​no more than 1m² will be left during the primary concrete pouring. The secondary pouring method for the small structural opening is generally to open two small holes on the formwork and penetrate It is very convenient and quick to use lead wires and connect them to the horizontal steel bars passing through the openings. However, this method does not take into account that the tensile force of the concrete's own weight on the horizontal steel bars and the expansion force generated by the expansion of the micro-expansion concrete will cause the formwork to shift and deform, resulting in grout leakage during pouring and the surface after pouring. There a...

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Problems solved by technology

However, this method does not take into account that the tensile force of the concrete's own weight on the horizontal steel bars and the expansion force generated by the expansion of the micro-expansion concrete will cause the formwork to shift and deform, resulting in grout leakage during pouring and the surface after pouring. There are extremely obvious height differences and bulges

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